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Mechanical, morphological, and thermogravimetric analysis of alkali-treated Cordia-Dichotoma natural fiber composites
Journal of Natural Fibers ( IF 3.5 ) Pub Date : 2018-10-19 , DOI: 10.1080/15440478.2018.1534183
B. Madhusudhan Reddy 1, 2 , Y. Venkata Mohana Reddy 2 , B. Chandra Mohan Reddy 1 , R. Meenakshi Reddy 2
Affiliation  

Usage of composites with natural fiber reinforcement is drastically increasing in recent times because of their low density, biodegradable nature, and low cost. However, natural fibers have certain core problems such as poor adhesion between the fiber and matrix and a relatively high degree of moisture absorption. Alkaline treatment of natural fibers is aimed at improving the adhesive strength so that effective stress transferability takes place in the composite. In the present work, Cordia-Dichotoma fibers were treated with sodium hydroxide (NaOH) and composites were prepared with different weight ratios of these fibers reinforced with epoxy. The prepared composites were tested for their tensile and flexural strengths (mechanical properties). Besides, for a comprehensive material characterization, IR spectroscopy (FT-IR), scanning electron microscope, and thermogravimetric analysis were carried out. This work investigates the influence of aforementioned NaOH treatment on thermal, mechanical, and morphological properties of the composite material.



中文翻译:

碱处理的Cordia-Dichotoma天然纤维复合材料的机械,形态和热重分析

近年来,由于天然纤维增强的复合材料的低密度,可生物降解的特性和低成本,其使用量急剧增加。然而,天然纤维具有某些核心问题,例如纤维与基质之间的粘合性差以及相对较高的吸湿度。天然纤维的碱处理旨在提高粘合强度,从而在复合材料中产生有效的应力传递能力。在目前的工作中,Cordia-Dichotoma纤维用氢氧化钠(NaOH)处理,并制备了具有不同重量比的环氧树脂增强纤维的复合材料。测试了制备的复合材料的抗张强度和抗弯强度(机械性能)。此外,为了进行全面的材料表征,红外光谱(FT-IR)扫描电子显微镜和热重分析。这项工作研究上述NaOH处理对复合材料的热,机械和形态性能的影响。

更新日期:2020-04-20
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